2
Hydrologic & Hydraulic Analysis Hydrology – amount of water, minimum 2-, 10- and 100-year storms. (ultimate development). Hydraulics – how the water moves. Compare existing to proposed conditions. Methods used must be in the public domain and verifiable.

3
COMAR 26.17.04 Construction on Nontidal Waters and Floodplains H&H analysis required for changes to the course, current or cross-section of waters of the State (unless waived). Waters of the State includes the 100-year floodplain for all regulated streams. Stream restorations – analysis needed for proper design.

4
Increased risk of flooding to others from any analyzed storm (.10). Any area, not owned by the applicant, subjected to flooding increases must be purchased, placed in a designated flood easement, or addressed by other means. other means is typically affected property owner sign off. H&H Analysis used for: